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## cilium-dbg preflight fqdn-poller

Prepare for DNS Polling upgrades to cilium 1.4

### Synopsis

Prepare for DNS Polling upgrades to cilium 1.4 by creating a
placeholder --tofqdns-pre-cache file that can be used to pre-seed the DNS
cached used in toFQDNs rules. This is useful when upgrading cilium with
DNS Polling policies where an interruption in allowed IPs is undesirable. It
may also be used when switching from DNS Polling based DNS discovery to DNS
Proxy based discovery where an endpoint may not make a DNS request soon
enough to be used by toFQDNs policy rules

```
cilium-dbg preflight fqdn-poller [flags]
```

### Options

```
  -h, --help                        help for fqdn-poller
      --tofqdns-pre-cache string    The path to write serialized ToFQDNs pre-cache information. stdout is the default
      --tofqdns-pre-cache-ttl int   TTL, in seconds, to set on generated ToFQDNs pre-cache information (default 604800)
```

### Options inherited from parent commands

```
      --config string   Config file (default is $HOME/.cilium.yaml)
  -D, --debug           Enable debug messages
  -H, --host string     URI to server-side API
```

### SEE ALSO

* [cilium-dbg preflight](cilium-dbg_preflight.md)	 - Cilium upgrade helper

